A dewatering device for sludge treatment

Abstract

The application discloses a sludge treatment dehydration device, and belongs to the technical field of sludge dehydration, which comprises a vertical plate, an outer barrel and a filter pressing box communicated with the outer barrel, and further comprises: a dehydration barrel, a plurality of water outlets are formed in the dehydration barrel and communicated with the inside of the dehydration barrel; a plurality of first opening and blocking mechanisms are used for opening and blocking the water outlets; two filter pressing plates are provided with water filtering holes; a squeezing mechanism is used for squeezing sludge; and a second opening and blocking mechanism is used for opening and blocking the water filtering holes. According to the application, the first opening and blocking mechanism is used for opening and blocking the water outlets, so that the water outlets are prevented from being blocked by impurities and the like, and the normal dehydration of the dehydration barrel is prevented from being affected by the blocked water outlets. The squeezing mechanism and the filter pressing plate are matched to squeeze the sludge, the second opening and blocking mechanism is used for opening and blocking the water filtering holes on the filter pressing plate after the squeezing and dehydration are completed, the efficiency of the device for sludge dehydration is improved, the downtime for cleaning is reduced, and the device has high practicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sludge dewatering, more particularly to a sludge treatment dewatering device. BACKGROUND

[0002] The dewatered sludge mainly refers to the solid residue remaining after the wet sludge is dewatered by drainage or filtration. The non-toxic dewatered sludge after various dewatering treatments can be directly used as fertilizer in farmland. Similarly, in order to reduce the volume of the sludge before treatment, it is necessary to remove part of the water. The dewatered sludge is generally easier to store and transport than the concentrated or liquid sludge. After dewatering, the sludge can be treated by recycling, isolation landfill, harmless incineration and other methods, which will be selected according to the composition of the dewatered sludge.

[0003] The Chinese patent with publication number CN219709342U discloses a sludge filter pressing dewatering equipment, which comprises a cylindrical shell, two ends of the lower part of the cylindrical shell are fixedly connected with bases, a centrifugal assembly is installed in the middle part of the inner cavity of the cylindrical shell, a separation assembly is installed in the middle part of the inner cavity of the centrifugal assembly, a square shell is fixedly connected with one end of the cylindrical shell, a filter pressing assembly is installed in the inner cavity of the square shell, a driving assembly is installed on one side of the base, the output shaft ends of the driving assembly are respectively connected with the centrifugal assembly and the separation assembly, and a brush is fixedly connected with the upper part of the inner cavity of the cylindrical shell. The centrifugal assembly, the separation assembly and the filter pressing assembly cooperate with each other to remove water in the sludge. Compared with the traditional plate filter pressing, the effect is higher.

[0004] The above-mentioned existing patent still has some shortcomings. When the centrifugal barrel dewatering the sludge, the impurities in the sludge will block the drainage holes on the centrifugal barrel. The brush is soft and cannot effectively unblock. Similarly, when the extrusion disc extrudes the sludge, the impurities will also block the holes on the arc-shaped filter plate, which will affect the dewatering progress and effect of the subsequent continuous use, and the use effect is not good.

[0005] Therefore, it is necessary to provide a sludge treatment dewatering device to solve the above technical problems. SUMMARY

[0006] The purpose of the present application is to provide a sludge treatment dewatering device to solve the above technical problems.

[0007] To achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0008] A sludge treatment dewatering device, comprising a vertical plate, an outer barrel and a filter pressing box connected therewith, further comprising:

[0009] A dehydration barrel is rotatably arranged in the outer barrel through a bearing, and a plurality of water outlets are formed in the dehydration barrel and communicated with the interior of the dehydration barrel;

[0010] A plurality of first opening and closing mechanisms are arranged on the inner wall of the outer barrel and used for opening and closing the water outlets;

[0011] A driving mechanism is arranged on the vertical plate and used for driving the dehydration barrel to rotate;

[0012] Two filter plates are movably arranged on the inner wall of the filter box, and water filtering holes are arranged on the filter plates;

[0013] An extrusion mechanism is arranged in the filter box and used for extruding sludge;

[0014] A second opening and closing mechanism is arranged in the filter box and used for opening and closing the water filtering holes.

[0015] As a further scheme of the present application, the first opening and closing mechanism comprises:

[0016] An outer sleeve is arranged on the inner wall of the outer barrel;

[0017] A first opening and closing head is slidably arranged on the inner wall of the outer sleeve and matched with the water outlets;

[0018] A first elastic member is arranged between the first opening and closing head and the inner wall of the outer sleeve.

[0019] As a further scheme of the present application, a hollow cylinder is rotatably connected to the vertical plate through a bearing, the hollow cylinder is connected to the end of the dehydration barrel and communicated with the interior of the dehydration barrel, and the driving mechanism comprises:

[0020] A driving member is arranged on the vertical plate, an output shaft of the driving member is provided with a rotating rod, and the rotating rod is provided with a straight gear;

[0021] An outer gear ring is arranged on the outer portion of the hollow cylinder and engaged with the straight gear.

[0022] As a further scheme of the present application, further comprising:

[0023] An L-shaped plate is arranged on the vertical plate, and a rotating shaft is rotatably connected to the L-shaped plate through a bearing;

[0024] A transmission belt is transmissionally connected to one end of the rotating shaft and the other end of the rotating rod;

[0025] A spiral blade is arranged on the rotating shaft and used for agitating and conveying sludge in the dehydration barrel.

[0026] As a further scheme of the present application, the extrusion mechanism comprises:

[0027] A telescopic piece is arranged on the inner wall of the filter-pressing box, and a pressing plate is arranged on the telescopic end of the telescopic piece, which is in sliding fit with the inner wall of the filter-pressing box;

[0028] Two linkage assemblies are arranged in the filter-pressing box, and the pressing plate moves through the linkage assemblies to drive the two filter-pressing plates to move towards each other or away from each other.

[0029] As a further scheme of the present application, a linkage cavity is arranged in the filter-pressing box, and the linkage assembly comprises:

[0030] A first connecting block and a second connecting block are both arranged in sliding fit in the linkage cavity, and the first connecting block and the second connecting block are connected with the pressing plate and the filter-pressing plate respectively;

[0031] A traction rope is connected with the first connecting block and the second connecting block at two ends respectively, and a second elastic member is arranged between the second connecting block and the bottom wall of the linkage cavity.

[0032] As a further scheme of the present application, a transmission cavity is arranged in the filter-pressing box, an outer plate connected with the pressing plate is arranged in sliding fit in the inner wall of the transmission cavity, an inner plate is arranged in sliding fit in the inner plate, and a third elastic member is arranged between the inner plate and the inner wall of the outer plate.

[0033] As a further scheme of the present application, a moving groove is arranged in the inner wall of the filter-pressing box and communicates with the transmission cavity, a sliding block is arranged in sliding fit in the inner wall of the moving groove, and the two ends of the sliding block are connected with the outer plate and the pressing plate respectively.

[0034] As a further scheme of the present application, the second unblocking mechanism comprises:

[0035] A transmission plate is arranged in the transmission cavity in a movable manner, and a fourth elastic member is arranged between the transmission plate and the side wall of the transmission cavity;

[0036] A second unblocking head is arranged on the transmission plate, and the end of the second unblocking head penetrates through the inner wall of the transmission cavity in a movable manner and is matched with the water filtering hole.

[0037] As a further scheme of the present application, the outer wall of the outer barrel is provided with a discharge pipe connected with the inside of the outer barrel, the outer part of the filter-pressing box is provided with a water outlet communicating with the inside of the filter-pressing box, and the outer part of the filter-pressing box is provided with a cleaning door.

[0038] Compared with the prior art, the present application has the following beneficial effects:

[0039] 1. This solution uses a drive mechanism to rotate the dewatering tank, causing the sludge to undergo centrifugal motion. The water in the sludge is discharged through multiple water outlets on the dewatering tank. While the dewatering tank rotates and centrifuges the sludge, each time the water outlet of the dewatering tank is in the position of the first unblocking mechanism, the first unblocking mechanism will unblock the water outlet. This prevents the water outlet from being blocked by impurities, thus avoiding affecting the normal dewatering of the dewatering tank. It greatly ensures that the water outlet is always in a clear state, which can effectively dewater the sludge, improve the effect and efficiency of sludge dewatering, and has good performance.

[0040] 2. In this design, the dewatered sludge from the rotating dewatering tank enters the filter press chamber. The sludge is then squeezed by the pressing mechanism and filter plates. Residual water in the sludge flows out through the filter holes on the filter plates, further compressing and dewatering the sludge, thus improving the dewatering effect. After the sludge is completely dewatered, the two filter plates return to their initial position, and a second unblocking mechanism unblocks the filter holes, preventing clogging and ensuring effective dewatering. This comprehensive and effective dewatering process guarantees high dewatering efficiency, reduces downtime for cleaning, and is highly practical. Attached Figure Description

[0041] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0042] Figure 2 This is a cross-sectional view of the outer barrel and filter press of the present invention;

[0043] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0044] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0045] Figure 5 for Figure 2 Enlarged structural diagram at point C;

[0046] Figure 6 This is a schematic diagram of the internal structure of the outer sleeve of the present invention;

[0047] Figure 7 This is a cross-sectional view of the filter press box of the present invention from other perspectives;

[0048] Figure 8 This is a schematic diagram of the internal cross-sectional structure of the side wall of the filter press box of the present invention;

[0049] Figure 9 for Figure 8 Enlarged structural diagram at point D;

[0050] Figure 10 For Figure 7 The schematic diagram of the structure of the middle extrusion plate in the process of extruding sludge;

[0051] Figure 11 For Figure 10 The schematic diagram of the structure of the middle extrusion plate in the process of extruding sludge;

[0052] Explanation of the reference numerals in the drawings:

[0053] 1, vertical plate; 2, outer barrel; 3, filter pressing box; 4, dehydration barrel; 5, water outlet hole; 6, first through plugging mechanism; 61, outer sleeve; 62, first through plugging head; 63, first elastic member; 7, driving mechanism; 71, driving member; 72, rotating rod; 73, straight gear; 74, outer gear ring; 8, extrusion mechanism; 81, telescopic member; 82, extrusion plate; 83, linkage assembly; 831, first connecting block; 832, second connecting block; 833, traction rope; 834, second elastic member; 9, second through plugging mechanism; 91, transmission plate; 92, fourth elastic member; 93, second through plugging head; 11, filter pressing plate; 12, water filtering hole; 13, hollow cylinder; 14, L-shaped plate; 15, rotating shaft; 16, transmission belt; 17, helical blade; 18, linkage cavity; 19, transmission cavity; 20, outer plate; 21, inner plate; 22, third elastic member; 23, shifting groove; 24, sliding block; 25, brush; 26, suction pipe. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0055] Please refer to Figures 1-2 , Figures 7-8 and Figure 10 A sludge treatment dehydration device, comprising a vertical plate 1, an outer barrel 2 and a filter pressing box 3 connected therewith, further comprising: a dehydration barrel 4 rotatably arranged in the outer barrel 2 through a bearing, a plurality of water outlet holes 5 are formed in the dehydration barrel 4 and connected with the inside of the dehydration barrel 4; a plurality of first through plugging mechanisms 6 are arranged on the inner wall of the outer barrel 2 and used for plugging and unblocking the water outlet holes 5; a driving mechanism 7 is arranged on the vertical plate 1 and used for driving the dehydration barrel 4 to rotate; two filter pressing plates 11 are movably arranged on the inner wall of the filter pressing box 3, and a water filtering hole 12 is arranged on each filter pressing plate 11; an extrusion mechanism 8 is arranged in the filter pressing box 3 and used for extruding sludge; and a second through plugging mechanism 9 is arranged in the filter pressing box 3 and used for plugging and unblocking the water filtering hole 12.

[0056] In use, the flocculated sludge is pumped into the dewatering barrel 4 through the cooperation of the pump body and the suction pipe 26, the dewatering barrel 4 is driven to rotate along the outer barrel 2 by the driving mechanism 7, and the outer barrel 2 is stationary, the rotation of the dewatering barrel 4 causes the sludge inside to rotate, so that the sludge undergoes centrifugal motion, and the water in the sludge is discharged through the plurality of water outlet holes 5 on the dewatering barrel 4. While the dewatering barrel 4 rotates to centrifugally dewater the sludge, the water outlet hole 5 is blocked by the first blocking mechanism 6 each time the water outlet hole 5 is in the position of the first blocking mechanism 6, so that the water outlet hole 5 is not blocked by impurities and the like, and the normal dewatering of the dewatering barrel 4 is not affected by the blocked water outlet hole 5. The water outlet hole 5 is always in an unblocked state, thereby effectively dewatering and improving the dewatering effect and efficiency of the sludge, and achieving good use effect.

[0057] The dewatered sludge is discharged into the filter press tank 3 through the rotation of the dewatering barrel 4, and then the sludge in the filter press tank 3 is extruded by the extrusion mechanism 8. Before extrusion, the extrusion mechanism 8 causes the two filter plates 11 to approach and combine with each other, and then the sludge is extruded by the cooperation of the extrusion mechanism 8 and the filter plates 11. At this time, the residual water in the sludge flows out through the water filter holes 12 on the filter plates 11, thereby further extruding and dewatering the sludge, further improving the dewatering effect, and ensuring the dewatering requirement of the sludge. After the extrusion and dewatering of the sludge are completed, the extrusion mechanism 8 returns to the initial position, and at this time the two filter plates 11 also return to the initial position. At this time, the second blocking mechanism 9 blocks the water filter holes 12 on the filter plates 11, thereby avoiding the water filter holes 12 from being blocked and affecting the subsequent extrusion and dewatering effect, and thereby comprehensively and effectively dewatering the sludge, ensuring the dewatering effect, improving the dewatering efficiency of the device for the sludge, reducing the downtime for cleaning, and having strong practicality.

[0058] The outer wall of the outer barrel 2 is provided with a discharge pipe communicating with the inside thereof, the filter press tank 3 is provided with a drain port communicating with the inside thereof, and the filter press tank 3 is provided with a cleaning door. The water discharged from the dewatering barrel 4 is discharged through the discharge pipe on the outer barrel 2, and the excess water in the filter press tank 3 is discharged through the drain port. The dewatered sludge in the filter press tank 3 can be treated by opening the cleaning door for subsequent cleaning.

[0059] In this embodiment, preferably, please refer to Figures 2-3 and Figure 6The first through-plugging mechanism 6 comprises: an outer sleeve 61 arranged on the inner wall of the outer tub 2; a first through-plugging head 62 slidingly arranged on the inner wall of the outer sleeve 61 and matched with the water outlet hole 5; and a first elastic member 63 arranged between the first through-plugging head 62 and the inner wall of the outer sleeve 61, wherein the first elastic member 63 is a spring in the application. When the dehydration tub 4 rotates, the first through-plugging head 62 is not in the position of the water outlet hole 5, the outer wall of the dehydration tub 4 will press the first through-plugging head 62, the first through-plugging head 62 will move towards the inside of the outer sleeve 61, and the first elastic member 63 will be compressed. When the dehydration tub 4 rotates to the position corresponding to the first through-plugging head 62 of the water outlet hole 5, the first through-plugging head 62 is no longer pressed, and the first through-plugging head 62 is driven to move outwards of the outer sleeve 61 by the rebound of the first elastic member 63, that is, the first through-plugging head 62 will enter the water outlet hole 5, thereby performing the through-plugging operation on the water outlet hole 5, and the impurities in the water outlet hole 5 are pushed out. In this way, the through-plugging operation is continuously performed, so as to ensure the smoothness of the water outlet hole 5 and avoid the plugging of the water outlet hole 5, and the use effect is good.

[0060] In the embodiment, preferably, please refer to Figures 1-2 The hollow cylinder 13 is rotatably connected to the stand plate 1 through a bearing, is connected to the end of the dehydration tub 4 and communicates with the inside of the dehydration tub 4, and the driving mechanism 7 comprises: a driving member 71 arranged on the stand plate 1, wherein an output shaft of the driving member 71 is provided with a rotating rod 72, the rotating rod 72 is provided with a straight gear 73, and the driving member 71 is a servo motor in the application; and an outer gear ring 74 arranged on the outside of the hollow cylinder 13 and meshed with the straight gear 73. The driving member 71 drives the rotating rod 72 and the straight gear 73 to rotate, the straight gear 73 drives the outer gear ring 74 and the hollow cylinder 13 to rotate, the hollow cylinder 13 drives the dehydration tub 4 to rotate along the outer tub 2, and the outer tub 2 does not rotate.

[0061] In the embodiment, preferably, please refer to Figures 1-2Further comprising: an L-shaped plate 14 arranged on the vertical plate 1, and a rotating shaft 15 rotatably connected to the L-shaped plate 14 through a bearing; a transmission belt 16, one end of which is in transmission connection with the rotating shaft 15, and the other end of which is in transmission connection with the rotating rod 72; and a spiral blade 17 arranged on the rotating shaft 15, for stirring and conveying the sludge in the dewatering barrel 4. When the driving member 71 drives the rotating rod 72 to rotate, the rotating rod 72 will also drive the rotating shaft 15 to rotate through the transmission belt 16, and the rotating shaft 15 will drive the spiral blade 17 to rotate, and the rotating direction of the spiral blade 17 is opposite to the rotating direction of the hollow cylinder 13 and the dewatering barrel 4. When the spiral blade 17 rotates, on one hand, it drives the centrifuged sludge in the dewatering barrel 4 to be conveyed forward, that is, it drives the sludge to gradually move from the dewatering barrel 4 to the filter-pressing box 3, thereby achieving the effect of conveying sludge; on the other hand, the spiral blade 17 can further crush the sludge, so that the internal water of the sludge can be fully discharged, thereby improving the dewatering performance of the sludge, and meanwhile, the direction in which the spiral blade 17 stirs the sludge is opposite to the rotating direction of the dewatering barrel 4, so that the effect of dewatering the sludge can be further improved.

[0062] The L-shaped plate 14 is provided with a suction pipe 26, the end of the suction pipe 26 penetrates through the hollow cylinder 13 and is located in the dewatering barrel 4. The sludge is sucked into the dewatering barrel 4 through the suction pipe 26 by an external pump body. The pumping of the pump body is a prior art, which is not shown in the figure.

[0063] In the embodiment, preferably, please refer to Figure 2 and Figures 7-11 The extrusion mechanism 8 comprises: a telescopic member 81 arranged on the inner wall of the filter-pressing box 3, and an extrusion plate 82 arranged at the telescopic end of the telescopic member 81, which is in sliding fit with the inner wall of the filter-pressing box 3. In the present application, the telescopic member 81 is an electric telescopic rod. Two linkage assemblies 83 are arranged in the filter-pressing box 3. When the extrusion plate 82 moves, it will drive the two filter-pressing plates 11 to move towards each other or away from each other through the linkage assemblies 83. When the sludge enters the filter-pressing box 3, the telescopic member 81 is started to drive the extrusion plate 82 to extend, so that the extrusion plate 82 moves towards the filter-pressing plates 11. When the extrusion plate 82 moves, it will drive the two filter-pressing plates 11 to move towards each other through the linkage assemblies 83, and finally the two filter-pressing plates 11 are combined together, as shown in Figure 10 Then, the sludge is extruded through the cooperation of the extrusion plate 82 and the filter-pressing plates 11, and the water in the sludge is filtered out from the filter holes 12, thereby further dewatering the sludge.

[0064] In the embodiment, preferably, please refer to Figures 7-9, the linkage cavity 18 is arranged in the filter box 3, the linkage assembly 83 comprises: a first connecting block 831 and a second connecting block 832, both of which are slidingly arranged in the linkage cavity 18, and the first connecting block 831 and the second connecting block 832 are connected with the extrusion plate 82 and the filter plate 11 respectively; a traction rope 833, both ends of which are connected with the first connecting block 831 and the second connecting block 832 respectively, and a second elastic element 834 is arranged between the second connecting block 832 and the bottom wall of the linkage cavity 18, and the second elastic element 834 in the application is a spring. Initially, the two filter plates 11 are in a position away from each other, as shown in Figure 7 , at this time, the second elastic element 834 is in a stretched state, that is, it is pulled by the traction rope 833, the first connecting block 831 and the extrusion plate 82; when the extrusion plate 82 moves towards the filter plate 11, the extrusion plate 82 will drive the first connecting block 831 to move along the linkage cavity 18, at this time, the second elastic element 834 will rebound, thereby driving the second connecting block 832 to move, and the second connecting block 832 will drive the filter plate 11 to move, that is, at this time, the two filter plates 11 move towards each other, and finally they are combined together, after being combined together, at this time, the extrusion plate 82 will continue to move and extrude, and drive the first connecting block 831 to move, at this time, the traction rope 833 is in a relaxed state, and does not affect the position of the two filter plates 11. When the subsequent extrusion is completed, the extrusion plate 82 moves away from the position of the filter plate 11, the first connecting block 831 moves and drives the traction rope 833 to move, and finally the second connecting block 832 and the filter plate 11 are driven to move by the traction rope 833, and the second elastic element 834 is stretched, and the two filter plates 11 move away from each other and return to the initial position.

[0065] In the embodiment, preferably, referring to Figure 2 , Figure 5 , Figure 7 and Figure 10 , the transmission cavity 19 is arranged in the filter box 3, the outer plate 20 connected with the extrusion plate 82 is slidingly arranged on the inner wall of the transmission cavity 19, the inner plate 21 is slidingly arranged in the inner plate 20, and the third elastic element 22 is arranged between the inner plate 21 and the inner wall of the outer plate 20, and the third elastic element 22 in the application is a spring. When the telescopic element 81 drives the extrusion plate 82 to move, the extrusion plate 82 will drive the outer plate 20 to move, the outer plate 20 will drive the inner plate 21 to move, and when the inner plate 21 moves, it will cooperate with the second blocking mechanism 9, thereby performing the opening and blocking operation on the filter water hole 12 of the filter plate 11, and the linkage is performed, thereby continuously opening and blocking the filter water hole 12, greatly preventing the filter water hole 12 from being blocked, and improving the effect of extruding and dehydrating the sludge.

[0066] In the embodiment, preferably, referring to Figure 5The inner wall of the filter-pressing box 3 is provided with a moving groove 23 communicating with the transmission cavity 19. A sliding block 24 is slidably arranged on the inner wall of the moving groove 23. The two ends of the sliding block 24 are connected with the outer plate 20 and the extrusion plate 82 respectively. When the extrusion plate 82 moves, it will drive the sliding block 24 to move along the moving groove 23, and the sliding block 24 will drive the outer plate 20 to move.

[0067] In this embodiment, preferably, please refer to Figure 2 , Figures 4-5 , Figure 7 and Figures 10-11 The second opening and blocking mechanism 9 comprises a transmission plate 91 movably arranged in the transmission cavity 19. A fourth elastic member 92 is arranged between the transmission plate 91 and the side wall of the transmission cavity 19. The fourth elastic member 92 in the present application is a spring, and the elastic force of the fourth elastic member 92 is smaller than that of the third elastic member 22. A second opening and blocking head 93 is arranged on the transmission plate 91. The end of the second opening and blocking head 93 movably penetrates the inner wall of the transmission cavity 19 and is matched with the water filtering hole 12. When the sludge is extruded, the extrusion plate 82 moves to drive the outer plate 20 and the inner plate 21 to move. At this time, the inner plate 21 extrudes the transmission plate 91. Since the elastic force of the fourth elastic member 92 is smaller than that of the third elastic member 22, the fourth elastic member 92 is compressed under pressure. At this time, the third elastic member 22 does not change, the transmission plate 91 drives the second opening and blocking head 93 to move, and the second opening and blocking head 93 gradually moves away from the water filtering hole 12 of the filter-pressing plate 11. Then, through the linkage assembly 83, the two filter-pressing plates 11 are brought close to each other and combined together, so as to perform subsequent sludge extrusion operation. The extrusion plate 82 moves to extrude and continuously drives the outer plate 20 to move. At this time, the inner plate 21 does not move, the third elastic member 22 is compressed under pressure, and the outer plate 20 continues to move. After the extrusion is completed, the extrusion plate 82, the outer plate 20 and the inner plate 21 gradually move to the initial position, and the two filter-pressing plates 11 also move away from each other to the initial position. Then, the fourth elastic member 92 rebounds without pressure, drives the second opening and blocking head 93 to move, and enters the water filtering hole 12 of the filter-pressing plate 11, so as to perform the opening and blocking operation on the water filtering hole 12 through the second opening and blocking head 93.

[0068] It should be noted that, in the present document, the terms such as first and second, etc. are used merely to differentiate one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Also, the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or apparatus including a list of elements does not only include those elements, but also includes other elements not explicitly listed, or further includes elements inherent in such process, method, article, or apparatus.

[0069] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be effected without departing from the spirit and scope of the present application, which is not limited to the exact construction and arrangement described. It is intended, therefore, to cover all modifications and adaptions that fall within the scope of the claims and their equivalents.

Claims

1. A dewatering device for sludge treatment, comprising a vertical plate (1), an outer barrel (2) and a filter press box (3) in communication therewith, characterized in that, Also include: Dehydration barrel (4) is rotatably arranged in the outer barrel (2) through the bearing, a plurality of water outlets (5) are formed in the dehydration barrel (4) and connected with the inside of the dehydration barrel (4); A plurality of first through and plug mechanisms (6) are arranged on the inner wall of the outer barrel (2), and are used for opening and plugging the water outlets (5); The driving mechanism (7) is arranged on the vertical plate (1), and is used for driving the dehydration barrel (4) to rotate; Two filter plates (11) are movably arranged on the inner wall of the filter box (3), and the filter plate (11) is provided with a filter hole (12); The extrusion mechanism (8) is arranged in the filter box (3), and is used for extruding the sludge; The second through and plug mechanism (9) is arranged in the filter box (3), and is used for opening and plugging the filter hole (12); The extrusion mechanism (8) comprises: The telescopic part (81) is arranged on the inner wall of the filter box (3), and the telescopic end of the telescopic part (81) is provided with an extrusion plate (82), and the extrusion plate (82) is in sliding fit with the inner wall of the filter box (3); Two linkage assemblies (83) are arranged in the filter box (3), and the extrusion plate (82) moves and drives the two filter plates (11) to move towards each other or away from each other through the linkage assemblies (83); The transmission cavity (19) is arranged in the filter box (3), the outer plate (20) is arranged in the transmission cavity (19), the inner plate (21) is arranged in the outer plate (20), and the third elastic element (22) is arranged between the inner plate (21) and the inner wall of the outer plate (20); The second through and plug mechanism (9) comprises: The transmission plate (91) is movably arranged in the transmission cavity (19), and the fourth elastic element (92) is arranged between the transmission plate (91) and the side wall of the transmission cavity (19); The second through and plug head (93) is arranged on the transmission plate (91), and the end portion of the second through and plug head (93) movably penetrates the inner wall of the transmission cavity (19) and is matched with the filter hole (12) When the sludge is extruded, the movement of the extrusion plate (82) drives the outer plate (20) and the inner plate (21) to move, at this time the inner plate (21) extrudes the transmission plate (91), because the elastic force of the fourth elastic member (92) is smaller than that of the third elastic member (22), the fourth elastic member (92) is compressed under pressure, at this time the third elastic member (22) does not change, the transmission plate (91) drives the second through plug (93) to move, the second through plug (93) gradually moves away from the filter hole (12) of the filter plate (11), then through the linkage assembly (83) the two filter plates (11) are close to each other and combined together, and then the subsequent sludge extrusion operation is carried out, the extrusion plate (82) moves and extrudes, and continues to drive the outer plate (20) to move, at this time the inner plate (21) does not move and the third elastic member (22) is compressed, the outer plate (20) continues to move, after extrusion is completed, the extrusion plate (82), the outer plate (20) and the inner plate (21) will gradually move to the initial position, and the two filter plates (11) will also move away from each other to the initial position, then the fourth elastic member (92) is not under pressure and rebounds, drives the second through plug (93) to move, and enters the filter hole (12) of the filter plate (11), so that the second through plug (93) is used for plugging operation of the filter hole (12).

2. The dewatering device for sludge treatment according to claim 1, characterized by The first through-plugging mechanism (6) comprises: an outer sleeve (61) arranged on the inner wall of the outer barrel (2); a first through-plug (62) slidingly arranged on the inner wall of the outer sleeve (61) and matched with the water outlet hole (5); a first elastic member (63) arranged between the first through-plug (62) and the inner wall of the outer sleeve (61).

3. The dewatering device for sludge treatment according to claim 1, characterized by The hollow cylinder (13) is connected with the end of the dewatering barrel (4) and communicates with the inside thereof, and the driving mechanism (7) comprises: a driving member (71) arranged on the stand plate (1), an output shaft of the driving member (71) being provided with a rotating rod (72), and the rotating rod (72) being provided with a straight gear (73); an outer gear ring (74) arranged on the outside of the hollow cylinder (13) and meshing with the straight gear (73).

4. The dewatering device for sludge treatment according to claim 3, characterized by Further comprising: an L-shaped plate (14) arranged on the stand plate (1), the L-shaped plate (14) being rotatably connected with a rotating shaft (15) through a bearing; a transmission belt (16) one end of which is in transmission connection with the rotating shaft (15) and the other end of which is in transmission connection with the rotating rod (72); a helical blade (17) arranged on the rotating shaft (15) and used for stirring and conveying the sludge in the dewatering barrel (4).

5. The dewatering device for sludge treatment according to claim 1, characterized by The linkage cavity (18) is arranged in the filter box (3), and the linkage assembly (83) comprises: a first connecting block (831) and a second connecting block (832) both slidingly arranged in the linkage cavity (18), and the first connecting block (831) and the second connecting block (832) are connected with the extrusion plate (82) and the filter plate (11) respectively; A traction rope (833) is connected with the first connecting block (831) and the second connecting block (832) respectively, and a second elastic member (834) is arranged between the second connecting block (832) and the bottom wall of the linkage cavity (18).

6. The dewatering device for sludge treatment according to claim 1, wherein An inner wall of the filter-pressing box (3) is provided with a moving groove (23) communicated with the transmission cavity (19), and a sliding block (24) is arranged on an inner wall of the moving groove (23) in a sliding mode, and two ends of the sliding block (24) are connected with the outer plate (20) and the extrusion plate (82) respectively.

7. The dewatering device for sludge treatment according to claim 1, characterized by An outer wall of the outer barrel (2) is provided with a discharge pipe communicated with an inside of the outer barrel (2), an outer part of the filter-pressing box (3) is provided with a water outlet communicated with an inside of the filter-pressing box (3), and the filter-pressing box (3) is provided with a cleaning door.

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